Sporozoa Babesia

Question 1

Two babesial organisms most commonly isolated from clinical specimens are?

Answer 1

Babesia microti (Theileria microti)
Babesia divergens

Question 2

Two forms of Babesia most commonly encountered in human species

Answer 2

Trophozoite

Merozoite

Question 3

Develops after the sporozoite infects the RBCs

Answer 3

Trophozoite

Question 4

most commonly seen diagnostic feature of Babesiosis

Answer 4

Ring form

Question 5

Babesiosis can be differentiated from malarial organisms by the absence of?

Answer 5

Malarial pigments:
Hemozoin
Schuffner's
Ziemann's
Maurer's

Question 6

Develops in the RBC as trophozoite matures

Answer 6

Merozoite

Question 7

the process of spore and sporozoite production via sexual reproduction

Answer 7

Sporogony

Question 8

Specimen of choice for Babesia

Answer 8

Giemsa-stained peripheral blood films

Wright stain

Question 9

This smears serve as screening slides

Answer 9

Thick blood smears

Question 10

smears used fro differentiating Babesia from Plasmodium spp.

Answer 10

Thin blood smears

Question 11

TRUE OR FALSE.

Timing of blood collection is crucial for the successful retrieving of Babesia parasites

Answer 11

FALSE

Timing of blood collection is not crucial for retrieval of Babesia

Question 12

Tick involved in life cycle of babesia

Answer 12

Ixodid tick

Question 13

Phylum of babesia

Answer 13

Apicomplexa

Question 14

Most common combinations of treatment for babesia

Answer 14

clindamycin and quinine
atovaquone and azithromycin
diminazine and pentamidine or singly
pyrimethamine and quinine or singly

Question 15

How many hours is required for the tick to transmit babesia?

Answer 15

12 hours

Question 16

The infective stage of the Plasmodium
parasite and the Babesia parasite for
humans is the:

Answer 16

Sporozoite

Question 17

What is the name of the dormant parasite
form found in patients with Plasmodium
ovale and Plasmodium vivax infections?

Answer 17

Hypnozoites

Question 18

The species of mosquito most commonly
known to serve as a vector for the genus
Plasmodium is:

Answer 18

Anopheles

Question 19

Which is a self-limiting
infection characterized by a gradual onset
of headache, chills, sweating, and fatigue
that demonstrates no periodicity?

Answer 19

Babesia microti

Question 20

Giemsa-stained blood smears demonstrate
normal-sized red blood cells containing
ring form trophozoites in pairs and tetrads,
without pigment or stippling. Which parasite
listed best fits this description?

Answer 20

Babesia divergens